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    <script>
        // 作业
        // 利用函数求任意个数的最大值
        function sum() {
            let max = arguments[0];
            for (let i = 0; i < arguments.length; i++) {
                if (arguments[i] > max) {
                    max = arguments[i];
                }
            }
            return max;
        }
        console.log(sum(33, 23, 13, 56, 45));
    </script>
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